64571441 has 8 divisors (see below), whose sum is σ = 70704768. Its totient is φ = 58482000.

The previous prime is 64571411. The next prime is 64571449. The reversal of 64571441 is 14417546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64571441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64571398 and 64571407.

It is not an unprimeable number, because it can be changed into a prime (64571449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7850 + ... + 13811.

It is an arithmetic number, because the mean of its divisors is an integer number (8838096).

Almost surely, 2^64571441 is an apocalyptic number.

It is an amenable number.

64571441 is a deficient number, since it is larger than the sum of its proper divisors (6133327).

64571441 is a wasteful number, since it uses less digits than its factorization.

64571441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21943.

The product of its digits is 13440, while the sum is 32.

The square root of 64571441 is about 8035.6356935839. The cubic root of 64571441 is about 401.1869763173.

Adding to 64571441 its reverse (14417546), we get a palindrome (78988987).

The spelling of 64571441 in words is "sixty-four million, five hundred seventy-one thousand, four hundred forty-one".